2164820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^2$

素因数の和:117

約数の個数: 54

約数和(自身を含む): 5403258

約数和(自身を除く): 3238438

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 470, 490, 658, 940, 980, 1316, 1645, 2209, 2303, 3290, 4418, 4606, 6580, 8836, 9212, 11045, 11515, 15463, 22090, 23030, 30926, 44180, 46060, 61852, 77315, 108241, 154630, 216482, 309260, 432964, 541205, 1082410, 2164820]

約数ペア:

[(1, 2164820), (2, 1082410), (4, 541205), (5, 432964), (7, 309260), (10, 216482), (14, 154630), (20, 108241), (28, 77315), (35, 61852), (47, 46060), (49, 44180), (70, 30926), (94, 23030), (98, 22090), (140, 15463), (188, 11515), (196, 11045), (235, 9212), (245, 8836), (329, 6580), (470, 4606), (490, 4418), (658, 3290), (940, 2303), (980, 2209), (1316, 1645)]